n.保单；根据；保修期
It is foolish to buy a car without a warranty . 购买没有保单的汽车是愚蠢的.
Yes, I have a one-year warranty. 是的，我有一年的保修单。
What warranty have you for doing this? 你这样做有什么根据?
This product comes with one year warranty. 这产品有一年的保固期。
